Software Engineer Data Processing

Narasim Bayana Boina San Francisco 650-***-**** **********@*****.*** LinkedIn

Summary

● An accomplished Software Engineer with 15+yearsofextensiveexperienceacrossvarioushigh-impact projects,specialize in building scalable,resilient,and highly available applications and services across multiple environments, including On-Premise, Cloud Foundry/Predict, AWS,and Google Cloud

● Modern Development Technologies:Skilled in Java,Spring Boot,Swagger API,Spring Cloud,Spring Security,SAML,UAA,OAuth2.0,AWSservices(S3,Blobstore,ECS,SNS,SQS,RDS),Kotlin,Scalaand NodeJS.

● Data Processing &Streaming:Expertise in in-memory data processing using Apache Spark (SQL, Streaming, Core), distributed message processing with Kafka and Zookeeper.

● Experience enhancing libraries usingGraphQL

● EnterpriseSolutions:ExperiencedindevelopingenterpriseapplicationswithJEE,JMS2,JAX-WS,JAX-RS, Hibernate,JPA,and XML.Proficient with SQL/NoSQLdatabases,includingOracle,PostgreSQL,MySQL, MongoDB,Cassandra,and DynamoDB.Front-End Technologies:Competent in JQuery,Handlebars, Backbone JS, AngularJS, HTML5, CSS3, and TypeScript.

● API Management &Integration:Designing and implementing API facades,proxies,and gateways. Proficientincreatingtwelve-factorapplicationsandhandlingasynchronous,event-basedobservablepatterns using Reactive Programming with RxJava and Java Concurrent API.

● Containerization&Security:ExperiencedincontainerizingapplicationsusingDockeranddeployingthem inECSandKubernetesclusters.ProficientwithsecuritytoolssuchasFortify,Coverity,TinfoilWebAPP/API, WhiteSource, and Threat Model.

● Agile Methodologies:Proficient in applying Agile practices such as TDD,SCRUM,Lean,and Pair Programming to enhance team productivity, improve code quality, and accelerate project delivery. Professional Experience

Senior Software Engineer Marqeta Inc, Oakland December 2021 – Present

● Spearheaded the implementation of the ISO 8583 specification and jPOS Framework for credit/debit card issuing and processing, POS/ATM transactions, and HSM integration.

● Leveraged AWS,Java,Aurora MySQL,PostgreSQL,DynamoDB,OAuth2.0,ECS,SNS,SQS,Kafka,and more to deliver innovative solutions and process ISOMessages for major card networks including VISA, MasterCard, Discover, and Pulse.

● Designed and developed scalable Key Block Crypto key management for HSM integration with minimal configuration changes.

● Architected and implemented Multi-Region Auth for asynchronous message processing to enhance service scalability and customer experience.

● Integrated Redis caching to ensure high reliability and performance of critical applications.

● Utilized Snowflake utilities, SnowPipe, and SnowSQL for data management and SQL query development.

● Developed and maintained automated testing frameworks with AWS services such as CodeBuild, CodeDeploy, Terraform, and GitHub integration.

● Created health metrics and monitors with Datadog and Terraform to improve application reliability and monitoring.

● Presented technical concepts and project updates to stakeholders,ensuring alignment and understanding across all parties.

● Addressed complex integration challenges by devising innovative solutions,Reduced processing time by 30%, scaled to handle 50% more traffic.

Staff Software Engineer Oportun, San Carlos October 2018 – December 2021

● Collaborated with cross-functional teams to transition monolithic applications for loan origination, management,and credit card services into Microservices.This transformation led to a 40%increase in transaction throughput and a 50% reduction in system latency.

● Designedhigh-performance,resilientAPIsusingSpringBoot,SpringCloud,SpringSecurity,AWSLambdas, Kotlin, JPA, Hibernate, MongoDB, PostgreSQL, and Kubernetes.

● Integrated third-party APIs (Plaid and Fiserv) for various payment and verification services.

● ImplementedmessageprocessingwithJMS/RabbitMQ,unittestingwithMockito,andintegratedSonarQube for code quality.

Software Engineer Yash Technologies, San Francisco June 2007 – August 2018 Delivered successful client projects for major companies, includingWells Fargo, Cisco, Macy’s, GE Digital

● Developed REST APIs and microservices using Spring Boot,Spring Cloud,and Spring Security. Containerized applications with Docker.

● Designed entity models and implemented cache replication with JBoss Infinispan.Streamlined data processing using Kafka, Flume, and Hadoop, and developed Spark applications for model training.

● Created mobile-enabled web applications with Node.js, Backbone.js, Handlebars, and jQuery.

● EnhancedAPIqueriesandserver-sideruntimeusingGraphQLandSwaggerAPI.ImplementedSSOandAPI security using SAML, UAA, OAuth2, and OpenID.

● Developed applications using Spring Boot, Spring Cloud, Go, and Redis for file storage and caching.

● Integrated New Relic and partner services with Predix Catalog, and managed security scans.

● Designed and developed wholesale commercial banking services and SSO authentication solutions.

● Leveraged Oracle,SiteMinder SSO,JMS,Java,and JEE technologies to deliver robust and high-quality solutions,resulting inimprovedsystemperformance,enhancedsecurity,andstreamlineduserauthentication processes.

Technical Proficiencies

● Languages & Frameworks: Java, Kotlin, Scala, SpringFramework, JPA, Hibernate

● Databases: SQL (Oracle, PostgreSQL, MySQL), NoSQL(MongoDB, Cassandra, DynamoDB)

● Tools&Technologies:Docker,Kubernetes,AWS(ECS,EKS,Fargate,S3,SNS,SQS),Kafka,Redis,Spark, Terraform, Jenkins, Git

● Front-End: JQuery, Handlebars, Backbone JS, AngularJS,HTML5, CSS3, TypeScript

● Security: Fortify, Coverity, Tinfoil, WhiteSource,OAuth2, OKTA, SAML

● Development Practices: TDD, SCRUM, Lean, Pair Programming Education

● Master’s in Computer Applications Sri Venkateswara University, India

● Bachelor of Science Sri Venkateswara University, India

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